Rural household toilet black water in-situ recycling device and method

Abstract

The invention provides a rural household toilet black water in-situ recycling device and method. The rural household toilet black water in-situ recycling device is composed of a pretreatment adjusting area, a microbial electrolysis strengthening treatment area and a clarification area. Black water generated by flushing a toilet with water in each household firstly enters a pretreatment pool, and macromolecular organic matters are converted into micromolecular organic matters through a hydrolytic acidification effect. Then, the black water enters a microbial electrolysis system provided with conductive plastic particles and a carbon fiber electrode, a weak voltage is applied to stimulate the effect of microorganisms, pollutants and pathogenic microorganisms in the black water are intensively treated, and the sewage finally flows into the clarification area, is baffled by a baffle and then is discharged. The clarification area serves as a discharged water storage pool. The treated effluent can be used as a liquid fertilizer for farmlands. The device and the method have the advantages of being simple and convenient to operate, efficient, low in consumption, stable in system operation, capable of recycling and harmlessly treating the black water and the like, and suitable for treating small-volume toilet black water.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a resource-based treatment system for in-situ treatment of black water in rural household toilets with a microbial electrolysis intensified treatment unit as the core, especially suitable for scattered areas in rural areas where it is difficult to centralize treatment, and realizes separate treatment for each household and black water resources. Background technique [0002] With the improvement of the rural living environment and the "toilet revolution", toilets in some rural areas have been changed to clean and hygienic flush toilets. Geographical conditions and economic factors restrict centralized collection and treatment without sewage treatment plants, and black water contains a large amount of toilet flushing water, carbon, nitrogen, phosphorus resources, and pathogenic microorganisms. Once discharged into the environment without treatment, it will expand the source ...

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Problems solved by technology

[0003] At present, in-situ treatment technologies for flushing toilets in my country include anaerobic fermentation to generate biogas for energy supply, artificial wetland treatment technology, etc. However, due to the small amount of water produced by each household and less organic matter, the generated biogas cannot continue to supply energy, which has certain limitations. Due to the presence of certain suspended solids, the artificial wetland technology has problems such as easy clogging and low treatment efficiency.

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